CV5
Material Design
Material Design
• Android 5.0 (API 21)
• Unifikovaný design napříč platformami (mobil, web)
• Flat design
• Jednoduché ovládací a navigační prvky
RecyclerView
• chytré ListView
• Adapter (stejný jako u ListView)
• LayoutManager (jak se zobrazují data)
• ViewHolder (reprezentace položky)
• ItemDecoration, ItemAnimator
RecyclerView
layoutManager = LinearLayoutManager(this)
recycler.setLayoutManager(layoutManager)
adapter = MyAdapter(data)
recycler.setAdapter(adapter)
class MyAdapter
: RecyclerView.Adapter<MyAdapter.ViewHolder> {
CoordinatorLayout
• super-powered layout
• fancy animace
• interakce
• AppBarLayout, CollapsingToolbarLayout
• Behaviors
CoordinatorLayout
SnackBar
• Lepší Toast
• Snackbar.make(view, “Hello”, Snackbar.LENGTH_SHORT).show();
https://developer.android.com/reference/android/support/design/widget/Snackbar.html
Smart Location Library
https://github.com/mrmans0n/smart-location-lib
compile 'io.nlopez.smartlocation:library:3.3.3'
SmartLocation.with(context).location()
.start({ location -> … });
SmartLocation.with(context).location().stop();
a pár věcí
o kterých by měl dobrý Android vývojář vědět
adb
• Android Debug Bridge
• adb devices
• adb logcat
• adb pull / push
• adb shell
Log.x
• Logování do Android Console
• Log.d(String, String)
• Log.d, Log.wtf, Log.e, Log.w, …
Fragmenty
• Když aktivita je málo
• Má šílený lifecycle
• Mohou být vnořené
Plurals
<plurals name="cars">
<item quantity="one">%d auto</item>
<item quantity="few">%d auta</item>
<item quantity="other">%d aut</item>
</plurals>
resouces.getQuantityString(R.plurals.cars, 2, 2)
Dialogy
https://github.com/afollestad/material-dialogs
MaterialDialog.Builder(this)
.title(R.string.title)
.content(R.string.content)
.positiveText(R.string.agree)
.negativeText(R.string.disagree)
.show()
Options menu
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
<item android:id="@+id/new_game"
android:icon="@drawable/ic_new_game"
android:title="@string/new_game"
android:showAsAction="ifRoom"/>
<item android:id="@+id/help"
android:icon="@drawable/ic_help"
android:title="@string/help" />
</menu>
override fun onCreateOptionsMenu(Menu menu): Boolean {
val inflater = getMenuInflater()
inflater.inflate(R.menu.game_menu, menu)
return true
}
override fun onOptionsItemSelected(MenuItem item): Boolean {
// Handle item selection
when (item.getItemId()) {
R.id.new_game ->
newGame()
return true
else ->
return super.onOptionsItemSelected(item)
}
}
Android Asset Studio
https://romannurik.github.io/AndroidAssetStudio/
Google Play Services
https://developers.google.com/android/guides/overview
• Stahuje se stejně jako každá jiná aplikace
• Služby jako jsou Maps, Wallet, G+, Location, Wear,…
RxJava
• Stream
• Observable, Subscriber
• http://rxmarbles.com/
http://reactivex.io/
• Crash/report analytics
• User analytics
• KPI
• Adopce nové verze
• Moc moc moc moc dat a čísel
Fabric
https://fabric.io
Architektura
• VM
• View - Model
• MVP
• Model - View - Presenter
• MVVM
• Model - View - ViewModel
• MVC
• Model - View - Controller
Kam dál?
• https://developer.android.com
• https://android-arsenal.com/
• Twitter - @JakeWharton, @AndroidDev,
@androidstudio, @crafty, @chrisbanes,
@cyrilmottier, @romannurik